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LINCOLN COUNTY, Okla. - A man accused of killing two people and shooting four others – including two Oklahoma officers – has a medical condition and may try to spread disease, an Oklahoma Highway Patrol poster states.

Around 6:30 p.m. Sunday, officers were called to reports of shots fired in the small area of Wellston, outside Oklahoma City.

Officials say when authorities arrived to the scene, Michael Vance opened fire with an AK-47, injuring two Wellston police officers.

Vance is either driving the silver Mitsubishi Eclipse or a 2014 white Chevrolet Sonic with the Oklahoma plate, 327-LIH, authorities told KFOR.

It is unclear how Vance would have obtained the Chevrolet Sonic.

Around 2:30 a.m., a man was reportedly shot at a gas station in Sayre, Oklahoma.

The shooting suspect matches Vance's description.

Police say the suspect attempted to carjack another victim, but was unsuccessful.

The 54-year-old man injured in the shooting was transported to a local hospital where he underwent surgery.

He is currently in good condition.

Authorities are still searching for Vance.

They believe he may have returned to Oklahoma County or Lincoln County.

Michael Vance

There is now an arrest warrant out of Oklahoma County for Vance, who is wanted on two counts of first degree murder, unauthorized use of a motor vehicle and being in possession of firearm with prior felony conviction.

According to a wanted poster released by OHP, Vance has a medical condition and may try to spread disease.

Michael Vance wanted poster, OHP

If you know of his whereabouts, call police immediately.

Do not approach the suspect.

He is considered armed and dangerous.

Police say Vance has been shot at least twice.

He was recently released from jail after being arrested for sexually assaulting a child.